I am so sorry I did not respond to your post about why we are not having "DACRON
" on our trailing edge of all our kites.
Well...their is a really good reason why
You have to understand that the materials have to be light, strong, UV resistant, impermeable, durable, low stretch, airtight, breathable, watertight, waterproof, tough, stable, and so on...
Most of the kite companies use these 2 types of material on their kites: Teijin & Dacron
which is made out of polyester in case you did not know. Few other kite companies use a different type of Nylon for their Canopies.
So let me explain so you get a better understanding why we are not using the "DACRON
" material on our Trailing Edge, and instead we use 2 layers of Teijin’s canopy fabric, known as T9600
Kites have tendency to stretch after a good period of use. I don't know if you know this, but a 6 months kite will fly different then a bran new kite depending how much use you have on it. This is due to the stretching of the canopy material. And so far most kite companies use the Teijin
material made out of Japan which it has much higher UV resistance and less stretch then other materials such as nylon.
After doing lots of R&D and talking to dealers, manufacturers, and customers, we realized that after a good six months use, the kites that had "DACRON
" material had more stretching on the Trailing Edge then other prototype kites that had only a double layer of Teijin material.
This is because the "DACRON
" material is heavier and won't stretch like the rest of the canopy material and because of the excessive flapping and turbulence of the Trailing Edge, it will tend to make the kite flutter more after an excessive time period and also will might start ripping the Trailing Edge.
This is the reason why we decide not to use "DACRON
" material on the Trailing Edge because of so much disturbance and the effect it has on the kite after a long period of time. But we use "DACRON
" on other places of the kite where you don't have so much flappering.
I hope this helps you understand the reason why we are not using "DACRON
" on the Trailing Edge of all our kites and use Teijin
material but folded in two to add thickness. By doing this they both can stretch at the same level and it doesn't put weight on the Trailing Edge, compare to the "DACRON
Once again, thank you for addressing this. Now people have a better understanding why we and few other kite companies don't use "DACRON
" on the Leading Edge of their kites..
Is there anything else I can help you with?????
I'm certain that the big companies who have much more experience than Epic with a much larger R&D department and budget and who use dacron would not agree with your findings but if your kites stretch that much then maybe you could use a better grade of rip stop.
I was looking at the bar on the beach the other day. The rust stains that come from the cheap screws that hold the bar together look quite bad after 6 months. Will you be using marine grade parts on your new bar system as rust always worries me from a quality point of view.